Publications by authors named "Kevin R Donahue"

Background: Rates of in-hospital venous thromboembolism (VTE) in the intracranial hemorrhage (ICH) population post oral anticoagulation (AC) reversal are as high as 10%. Guidelines recommend the initiation of prophylactic AC 24 to 48 hours post ICH; however, there is no guidance regarding optimal VTE prophylaxis post-reversal.

Objective: This study aimed to identify the incidence of thromboembolism post oral AC reversal in patients presenting with ICH and describe VTE prophylaxis timing and agent selection.

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Activated partial thromboplastin time (aPTT) and unfractionated heparin (UFH) level via the anti-factor Xa activity assay (anti-Xa) are commonly used assays for UFH monitoring. While discordance between the two assays is common, its impact on critically ill patient outcomes is unclear. This study aimed to compare the incidence of major bleeding events among critically ill patients with discordant aPTT and anti-Xa activity while on UFH, to patients with no discordance.

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Purpose: The Impella device historically required a heparin-based purge solution to reduce the risk of biomaterial deposition to maintain pump function. In April 2022, the Food and Drug Administration approved utilization of bicarbonate-based purge solutions (BBPS) as an alternative to heparin for patients who are intolerant to heparin or in whom heparin is contraindicated. The purpose of this case series is to report patient outcomes of Impella support with BBPS use at our institution.

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Infections from prolonged use of axillary intra-aortic balloon pumps (IABPs) have not been well studied. Bloodstream infection (BSI) occurred in 13% of our patients; however, no difference in outcome was noted between those with BSI and those without. Further studies regarding protocol developments that minimize BSI risk are needed.

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Background: Increased analgosedation requirements have been described in patients with acute respiratory distress syndrome (ARDS) on extracorporeal membrane oxygenation (ECMO) support due to unique pharmacokinetic challenges. There is a paucity of data comparing sedation requirements in patients on ECMO for ARDS secondary to SARS-CoV-2 versus other etiologies of respiratory failure.

Objective: To compare sedation and analgesia requirements in adult patients with SARS-CoV-2 versus non-SARS-CoV-2 ARDS requiring veno-venous (VV) ECMO support.

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Background: Direct oral anticoagulants (DOACs) are widely utilized following cardiothoracic transplantation with limited guidance regarding drug-drug interactions (DDIs), periprocedural management, and DOAC-specific monitoring.

Methods: We performed a single-center, retrospective, descriptive analysis of adult cardiothoracic transplant recipients initiated on DOAC therapy between May 2016 and July 2021. The primary endpoint for this analysis was the percentage of patients dosed per package labeling.

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Objectives: The increasing use of oral factor Xa inhibitors (FXaI) has led to a growing interest in the clinical utility of laboratory monitoring to enhance safety and effectiveness. Particularly, the use of FXaI-specific anti-Xa concentrations has gained traction and been advocated for several indications, but limited studies have explored the role of anti-Xa concentrations in guiding inpatient transitions from oral to parenteral anticoagulants. Therefore, additional data on such approaches are warranted to help balance bleeding and thrombotic risks in the higher acuity inpatient setting.

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Background: Post intubation cardiac arrest and hemodynamic instability are serious adverse events encountered in critically ill patients. The association of pre-existing right ventricular (RV) dysfunction with post intubation cardiac arrest and hemodynamic instability in critically ill patients is unknown.

Methods: This is a retrospective matched cohort study of adult critically ill patients who underwent intubation from July 2016 to December 2019.

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Severe acute respiratory syndrome coronavirus 2 infections are associated with greater risk of both arterial and venous thromboembolic events. This has been attributed to a florid proinflammatory state resulting in microvascular dysfunction, activation of platelets and procoagulant systems as well as possible direct endothelial injury. The associated morbidity and mortality of these events has prompted much speculation and varied anticoagulation and fibrinolytic strategies based on multiple criteria including disease severity and biomarkers.

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Background: Oral direct factor Xa inhibitors (FxaIs) are renally eliminated; thus, acute kidney injury (AKI) may increase the risk for drug accumulation and bleeding. There is minimal data describing the effects of AKI on FxaI anti-Xa levels or clinical outcomes.

Objective: To compare anti-Xa level monitoring with standard monitoring in patients who experience AKI on apixaban or rivaroxaban.

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Background: Intermittent inhaled alprostadil (iPGE) may be a viable alternative to inhaled nitric oxide or epoprostenol for management of right ventricular failure, pulmonary hypertension (pHTN) or acute respiratory distress syndrome (ARDS). However, limited evidence exists regarding iPGE use in adults, ideal dosing strategies, or optimal use cases.

Objective: To describe the clinical characteristics of patients receiving iPGE and identify specific sub-populations warranting further research.

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Background: Andexanet alfa, a modified recombinant factor Xa (FXa), was FDA approved in 2018 for anticoagulant reversal in patients with life-threatening bleeding associated with FXa inhibitors (FXaI). The ANNEXA-4 investigators administered andexanet alfa to patients within an 18-h from last dose of oral FXaI. In practice, time from last dose is often unknown.

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Objective: To describe clinically pertinent challenges of managing sedation in COVID-19 patients on venovenous extracorporeal membrane oxygenation (VV-ECMO) and describe considerations for enhanced safety and efficacy of pharmacological agents used.

Data Sources: A PubMed search was performed using the following search terms: , , , , , , , , , , , , , , , , , , , and .

Study Selection And Data Extraction: Relevant clinical and pharmacokinetic studies were considered.

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Background: Although not routinely recommended, anti-Xa level monitoring for apixaban or rivaroxaban may be useful in certain clinical scenarios. There are currently no laboratory standards, therapeutic ranges, or proven correlation between anti-Xa levels and clinical outcomes.

Objective: This study describes the utilization, application, and association of anti-Xa levels with clinical outcomes in patients receiving apixaban or rivaroxaban.

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Vital signs are regularly monitored in hospitalized patients. In the intensive care unit (ICU), traditional non-invasive blood pressure monitoring and telemetry may not provide enough information to determine the etiology of hemodynamic instability or guide intervention. Arterial catheters remain the gold-standard for continuous blood pressure monitoring and are commonly used in ICU patients.

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Direct factor Xa inhibitors, such as apixaban and rivaroxaban, are widely used for treatment and prevention of venous thromboembolism; however, recent cases of therapeutic failure have been reported. Potential risk factors associated with therapeutic failure such as dose deviations outside of package labeling recommendations, and the use of direct factor Xa-specific inhibitor levels to guide clinical decision making continue to be areas of further investigation. Our study aimed to describe characteristics and dosing regimens in patients on apixaban or rivaroxaban who experienced a new or recurrent thrombosis.

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Compared with vitamin K antagonists (VKAs), oral factor Xa inhibitors are associated with at least equivalent efficacy and a lower incidence of major bleeding. Despite this benefit, bleeding remains the most common adverse event. Prior to the approval of andexanet alfa, alternative agents such as 4-factor prothrombin complex concentrate (4F-PCC) were utilized for reversal.

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Background: Oral factor Xa inhibitors (FXaI) can be administered in fixed doses without the need for routine laboratory monitoring. Anti-Xa assays can estimate anticoagulant effect for specific FXaI's. The aim of this study was to characterize anti-Xa levels in patients taking apixaban or rivaroxaban with major bleeding events.

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The primary objective of this study was to describe the impact on bleeding rates of 2 different strategies for transitioning from a direct oral anticoagulant (DOAC) to a parenteral anticoagulant: a delayed, clinically driven strategy versus the standard per-package-insert strategy. This was a single-center descriptive cohort study conducted at a large academic medical center. Included patients were 18 years or older, admitted as an inpatient, and had received at least 1 dose of a DOAC prior to initiation of therapeutic parenteral anticoagulation.

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Background: Dexmedetomidine (DEX) can cause hypotension complicating its use in critically ill patients with labile hemodynamics secondary to an underlying disease state such as heart failure. The aim of this study was to determine the effect of DEX on mean arterial pressure (MAP) in nonsurgical patients with heart failure and reduced ejection fraction (HFrEF).

Methods: This retrospective single-center cohort study evaluated patients who received DEX in the cardiac care and medical intensive care units at a large academic hospital.

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This commentary describes the concept of second victim syndrome and its application to pharmacy learners and preceptors. Although there is published literature regarding implementation of second victim syndrome programs at an institutional level, there is limited guidance regarding the second victim syndrome in the context of a pharmacy training environment; however, there are known risk factors such as medication safety events, failure to rescue events, or overall lack of experience of a clinician. With a growing awareness of the mental health concerns of health care providers, this is a potential area for growth and skill development for pharmacists of all levels.

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Background: Impella devices are being increasingly used to manage cardiogenic shock. The incidence of thrombosis and hemolysis in patients on Impella support increases with longer durations of use, and the management of Impella thrombosis remains ill-defined.

Methods: In this case series, we describe our institutional use of tissue plasminogen activator (tPA) alteplase in the Impella purge solution (0.

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Cardiogenic shock is a life-threatening condition that may occur secondary to a variety of cardiac conditions, and may require temporary support with percutaneous ventricular devices like the Impella®. Anticoagulation in patients with Impella® devices can often be complicated due to unpredictable purge flow rates, pre-existing coagulopathy, or heparin allergies. The purpose of this article is to discuss the various options for anticoagulation in the setting of Impella®.

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Left ventricular assist devices (LVADs) offer a therapeutic strategy for patients with end-stage heart failure. Increased device utilization has also increased the incidence of device-related complications including gastrointestinal bleeding (GIB). Multiple mechanisms have been proposed in the pathophysiology of continuous-flow LVAD-associated GIB including physiologic changes associated with high shear and nonpulsatile flow such as gastrointestinal arteriovenous malformations and acquired von Willebrand syndrome.

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Importance: In dermatology, the development of objective, standardized quality measures that can be used in a clinical setting is important to be able to respond to the needs of payers and credentialing and licensure bodies and to demonstrate dermatologic value.

Objective: To examine the feasibility of using Physician Global Assessment (PGA) scores to collect and track patient acne and psoriasis outcomes over time.

Design, Setting, And Participants: The PGA severity scores were included on physicians' billing sheets for patients with acne and psoriasis seen at a tertiary care center outpatient dermatology clinic from June 2011 through October 2012.

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